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Finding the Fourth Proportional to 56,681.60, 85,022.40 and 51,627.20

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Solution

The fourth proportional to 56,681.60, 85,022.40 and 51,627.20 is: 77,440.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,681.60 : 85,022.40 = 51,627.20 : x
  2. Step 2: Convert to fraction form
    56,681.60/85,022.40 = 51,627.20/x
  3. Step 3: Cross multiply
    56,681.60x = 85,022.40 × 51,627.20
  4. Step 4: Simplify right side
    56,681.60x = 4,389,468,449.28
  5. Step 5: Solve for x
    x = 4,389,468,449.28/56,681.60
  6. Step 6: Final answer
    x = 77,440.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.